| Core Identity |
| Developer | Vito Technology Inc. | Appelio | in a nutshell - kurzgesagt GmbH | Terminal Eleven LLC | Noctua Software Ltd | Terminal Eleven LLC | Utku Gedik | JSDT SOLUTIONS | StudySwitch, Inc. | iNaturalist |
| Category | Education | Education | Education | Education | Education | Education | Education | Education | Education | Education |
| Platform | iOS, Android | Android, iOS | Android, iOS | Android, iOS | iOS, Android | iOS, Android | iOS, Android | Android | Android, iOS | iOS, Android |
| Store Metrics |
| Rating | 4.7 / 5 | 4.7 / 5 | 4.9 / 5 | 4.6 / 5 | 4.8 / 5 | 4.5 / 5 | 3.3 / 5 | 4.5 / 5 | 4.7 / 5 | 4.8 / 5 |
| Ratings Count | 25,016 | 33 | 2,499 | 7,634 | 35,790 | 18,676 | 3 | 1,898 | 15,718 | 30,771 |
| Price | Free | Free | $2.99 | $2.99 | Free | Free | Free | Free | Free | Free |
| Release Date | Nov 5, 2008 | Nov 26, 2025 | Sep 20, 2020 | Dec 10, 2010 | Apr 7, 2019 | Mar 4, 2011 | Jul 18, 2025 | Apr 18, 2018 | May 25, 2022 | Mar 9, 2018 |
| Last Updated | Apr 30, 2026 | Apr 14, 2026 | Nov 10, 2025 | May 2, 2025 | Feb 22, 2026 | Sep 23, 2025 | Apr 25, 2026 | Apr 25, 2026 | Apr 24, 2026 | Apr 10, 2026 |
| Sentiment & Reviews |
| Sentiment | terrible | excellent | excellent | - | - | mixed | mixed | - | - | negative |
| Score | 15/100 | 85/100 | 85/100 | - | - | 55/100 | 70/100 | - | - | 35/100 |
| Praises | - Long-term users value the meditative music and accurate celestial navigation tools provided by the app
| - Long-term reliability of the sky mapping tool keeps users engaged over many years
- Lean and ad-free interface provides a focused experience for identifying celestial objects
- Open source nature fosters a sense of community and genuine labor of love
| - Educational scale visualization provides a calming and perspective-shifting experience for science enthusiasts
- Ad-free experience and donation-based model foster deep user trust and appreciation
- High-quality artistic style and animation keep users engaged during long exploration sessions
| - | - | - Augmented reality features provide an accessible way for beginners to identify stars and planets
| - Comprehensive chemistry reference material provides significant value for students studying at the secondary level
| - | - | - Gamified nature exploration challenges provide a compelling incentive for users to get outdoors
- Live camera identification provides immediate educational value for users exploring local natural environments
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| Complaints | - Intrusive video advertisements appearing every few seconds render the core stargazing experience completely unusable
| - Inaccurate celestial positioning and calibration issues frustrate users following the latest update
- Performance lag and instability on tablet devices disrupt the viewing experience
| - Application launch failures and immediate crashes on specific mobile hardware post-update
- Outdated scientific facts and missing celestial objects diminish the educational accuracy
| - | - | - Inaccurate celestial positioning and compass drift cause frustration during stargazing sessions
| - Application launch failures prevent users from accessing core study materials following the latest update
| - | - | - Camera performance regressions following the latest update cause frequent freezing and application crashes
- Inaccurate species identification model frequently misclassifies common organisms as unrelated species or broad categories
- Loss of historical observation data following reinstallation or update cycles frustrates long-term users
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| Requests | - Users request a one-time purchase option to remove advertisements instead of a recurring subscription model
| - Landscape orientation support for tablets would improve the usability of the sky map
- Camera overlay functionality would help users match digital maps to physical celestial bodies
| - Audio narration of descriptions would improve accessibility for younger children and visually impaired users
- Interactive sandbox mode for direct size comparison between multiple selected objects
| - | - | - Improved offline functionality to ensure accurate star mapping without constant internet reliance
| - Interactive study tools like flashcards and mnemonics would improve the retention of chemical concepts
| - | - | - Cloud synchronization for observation data to prevent permanent loss during app reinstallation
|
| Strategic Intel |
| Strengths | - Apple Design Award heritage sustains initial trust
- AR sky-overlay mechanism provides high visual utility
| - Open-source community model reduces R&D costs
- Ad-free interface creates high trust with casual users
- Long-term utility builds multi-year retention
| - High-fidelity artistic style creates a unique educational environment
- Kurzgesagt brand authority drives organic conversion
- Ad-free model builds long-term user trust
| - | - Scientific accuracy derived from open-source heritage sustains high user trust
- Telescope control protocols create high switching costs for hobbyists
- Minimalist UI reduces cognitive load for casual stargazers
| - Offline functionality reduces switching costs for outdoor segments
- AR interface lowers the barrier to entry for casual users
| - 14-language library functions as a B2B distribution moat into international education partnerships
- Integrated study-tool suite increases session frequency via mastery tracking
| - | - | - Proprietary identification model derived from global community observations
- Privacy-first architecture lowers initial friction for families
- Non-profit status builds high institutional trust
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| Weaknesses | - Ad frequency disrupts core stargazing utility
- 0.7★ Android-iOS rating gap indicates technical neglect
- Legacy user churn due to subscription paywalls
| - 0.52★ Android-iOS rating gap indicates platform-specific instability
- Calibration errors post-update drive churn
- No landscape orientation support for tablets
| - Immediate launch crashes on newer hardware
- Outdated scientific data
- Lack of audio narration for accessibility
| - | - Premium tier lacks cross-platform notification parity
- No wearable integration limits active outdoor engagement
- Android-iOS rating gap suggests inconsistent performance
| - Persistent compass drift erodes core utility
- 0.2-star rating gap between iOS and Android platforms
| - 0.7-star rating gap between platforms signals poor iOS stability
- Launch failures post-update create a critical barrier to entry
| - | - | - Local-only data storage causes permanent loss for users
- Camera stability regressions in the latest update
- Identification model frequently defaults to broad categories
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| Pricing | freemium | free | freemium | paid | freemium | freemium | freemium | free | freemium | free |
| Momentum | Maintenance | Active | Zombie | Maintenance | - | Maintenance | Maintenance | - | Intense | Maintenance |
| Update Cadence | 4 versions, 1 majors/6mo, ~365d avg | 3 versions, 1 majors/6mo, ~7d avg | 2 versions, ~643d avg | 5 versions | - | 2 versions, 1 majors/6mo, ~11d avg | 2 versions, ~196d avg | - | 5 versions | 5 versions, ~8d avg |
